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  • 4T65E and 4T65E HD (99+) N-Body Swap


    Axles:
    The swap also requires axles that are the proper length and have the proper number of splines for both the inner Joint (transmission side) and outer joint (hub side). Unfortunately, there are no off the shelf axles that you can buy for this application and therefore the axles will need to be custom made for this application.

    From my research the follow combination should work to get you the proper length axles if you are going with the 4T65E HD transmission. (Note: The 4T65E non HD trans will require different parts)


    99-05 N-Body 4T65E HD Axle Combination:
    Left Hand Axle: Right Hand Axle:
    99-05 Grand Am Outer Joint 99-05 Grand Am Outer Joint
    99-05 Grand Am Axles Shaft 91 Grand Prix Axle Shaft *
    03 Bonneville SSEI LH Female Inner Joint * 03 Bonneville SSEI RH Male Inner Joint *
    * Or Similar Variant


    Exploded view of how the axles are put together.
    Click image for larger version Name: axel.jpg Views: 1 Size: 11.6 KB ID: 424778

    Axle Reference Information:
    4T45E
    99-05 N-Body Axle LH
    99-05 N-Body Axle RH
    CV Driveshaft Compressed Length :
    21"
    21"
    Inboard Joint Type :
    Female
    Female
    Inner Joint Spline Count :
    34
    34
    Outer Joint Spline Count :
    30
    30
    4T65E HD
    03 Bonneville SSEI Axle LH
    03 Bonneville SSEI Axle RH
    CV Driveshaft Compressed Length :
    22 3/8"
    25 1/4"
    Inboard Joint Type :
    Female
    Male
    Inner Joint Spline Count :
    34
    39
    Outer Joint Spline Count :
    33
    33
    4T65E
    03 Bonneville SE Axle LH
    03 Bonneville SE Axle RH
    CV Driveshaft Compressed Length :
    21 7/8"
    25 7/8"
    Inboard Joint Type :
    Female
    Male
    Inner Joint Spline Count :
    34
    34
    Outer Joint Spline Count :
    33
    33
    4T60E
    91 Grand Prix w/o ABS LH
    CV Driveshaft Compressed Length :
    20 7/16"
    Inboard Joint Type :
    Female
    Inner Joint Spline Count :
    35
    Outer Joint Spline Count :
    33
    ← Other Mounting Options
    Electronics and Misc. →
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